1.  audaciousness(n = noun.attribute) audacity, temerity - fearless daring;
is a kind of boldness, daring, hardihood, hardiness
Derived forms adjective audacious₃, adjective audacious₁

2.  audaciousness(n = noun.attribute) audacity - aggressive boldness or unmitigated effrontery; "he had the audacity to question my decision"
is a kind of boldness, brass, cheek, face, nerve
has particulars: assumption, effrontery, presumption, presumptuousness
Derived form adjective audacious₂

   The quality of being audacious; impudence; audacity. [1913 Webster]